NEET Chemistry ยท Hard

Redox Reactions: Oxidation number MCQ

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Oxidation numberHardQuestion 25016

Question

Oxidation number of Mn in MnO2MnO_2 is:

  1. A
    +4
    Correct
  2. B
    +2
  3. C
    +7
  4. D
    +6

Correct answer

+4

Explanation

x + 2(-2) = 0 gives x = +4.